Necking-machine.



No. 800,764. PATENTED OCT. 3, 1905. J. J. RIG-BY.

NEGKING MACHINE.

APPLICATION FILED JAN.18, 1904.

' 2 SHEETS-SHEET 1.

74 f z' il will) 32x 43 am UNITED STATES PATENT OFFICE.

JOHN J. RIGBY, OF NEW YORK, N. -Y., ASSIGNOR TO E. WV. BLISS COMPANY, ACORPORATION OF \VEST VIRGINIA.

NECKlNG-MACHINE.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed January 18, 1904. Serial No. 189,392.

To all whom it may concern:

Be it known that I, JOHN J. RIGBY, a citizen of the United States ofAmerica, and a resident of the city of New York, borough of Brooklyn,county of Kings, and State of New York, have invented certain new anduseful Improvements in Necking-h Iachines, of which the following is aspecification.

My invention relates generally to amachine for expanding or deflecting aportion of ashell or blank, and has reference, so far as the structureshown in the present application is concerned, to a necking-machine.

The object had in view is the production of a simple and effectivestructure capable of performing the work noted above.

The present form of my invention is particularly adapted to expand thebody portion of a shell of sheet material, the said shell havingpreviously been drawn up or otherwise formed to a size correspondingwith the size of neck desired.

In carrying out my invention I employ a stationary work-holding device,a rotatable chuck carrying a plurality of expander-rollers, an expanderfor the rollers of the chuck, and in the present instance a plurality ofclasping-jaws for holding the blank or shell on the work-holding device.

Other improvements will appear as the specification proceeds.

In the accompanying drawings I have shown my invention embodied in asuitable form; but changes may of course be made and elements omittedwithout departing from the invention.

In the said drawings, Figure lis a vertical sectional view on the line 11 of Fig. 2 of a machine embodying my invention. Fig.2 is a frontelevation. Figs. 3 and 4 are Vertical sectional views of thework-holding device, rotatable chuck, &c., showing the elements in twodifferent positions. Fig. 5 shows the development of the blank or shell.

Similar characters of reference indicate corresponding parts in thedifferent views.

1 denotes a framework of any suitable construction for properlysupporting the parts of themachinc.

2 indicates the stationary work-holding device, provided with acircumferential flange 3, on which the shell or blank is placed.

1 is a rotatable chuck located inside of the stationary work-holdingdevice and carrying a plurality of expander-rollers 5, in the presentinstance two, mounted on wedge-shaped portions 6, located in the slot 7of the said chuck. Interposed between the wedge-shaped portions in theslot 7 is a tapered expander 8, mounted on the shaft 9, which in thiscase is continuously revolving, thereby causing the chuck 4 to rotatewith it. Springs 10 normall y hold the Wedge-shaped members in theircontracted position. As will be seen from an inspection of Fig. 1, theexpander-rollers 5 project to a point beyond the circumferential flange3 of the stationary work-holding device.

Located in front of the machine and on either side of the stationarywork-holding device and of the expander-rollers are two jaws 11, slidingin the guides 12 and adapted to close in over the blank mounted on thestationary work-holding device. These jaws are constructed or formedwith a surface 13 of substantially the same diameter as the outsidediameter of the circumferential flange 3-that is, substantially equal tothe diameter of the neck portion of the shell or blank. This surface 13is coextensive with the circumferential flange 3. Next to this surface13 is another surface 14 of a larger diameterthatis, of a diameter equalto the diameter of the body portion to be formed on the blank or shell.This surface 14 is coextensive with the expander-rollers. Beyond thissurface 14 is located a surface 15, which extends in over the end of theshell or blank and of a diameter smaller than the diameter of the bodyportion of the blank to be formed, so as to prevent lateraldisplacement.

Sliding in the framework and in the vertical guide 16 of the same is asliding member 17, connected to the treadle 18 by means of the rod 19and plate 20. The plate 20 is connected to the sliding jaws by means ofthe toggle-links 21. The spring 22 normally holds the treadle 18 in itsuppermost position, and consequently the slider 17 up against thatportion of the framework which is denominated by 23. A cushion 2 1, ofrubber or other soft material, is provided on the slider 17, so as toprevent any undue jar when the parts return to their normal position.Moving with the slider is a member 25, sliding in the guides 26 on therear side of the framework. The shaft 9 is rotated continuously by meansof a pulley 27 or by other suitable means and is provided with a collcr28, mounted fast on the same.

29 is a bell-crank mounted at 30 and connected with a sleeve 31, slidingon the shaft 9. The bell-crau k 29 is attached to the slider 17 bylIlOttllSflf the links 32 and Link 33 is provided with an adjustablescrew 34:, which 1 acts as a stop against the bed-plate 35.

The whole machine is in this case of a very small size and isconveniently mounted on a working bench and connected to the trcadle 18on the floor.

The blank to be acted upon is struck up in the present instance into ashell having a diameter equal to the diameter of the size of neckdesired on the said shell or blank. This shell is then placed upon thework-holding device. The treadle 18 being depressed, the two jaws 11close in over the same, the surface 13 binding the neck portion to thecircumferential flange 3 and the surface 15 extending in over the blank,so as to prevent lateral dis placement of the same. The parts are soarranged that the toggles 21 are adapted to straighten out and to bemoved approximately on the dead-center to close these jaws 11 in overthe blank in the manner just set forth, while the sleeve 31 moves thedistance from the position shown in Fig. 1 up to the fast collar 28. Thedepression of the treadle being continued, the sleeve 31 being incontact with the collar 28 will carry the shaft 9 with it, therebycausing the expander 8 to move the two wedge-shaped portions 6 intotheir expanded position, whereby the expander-rollers also are movedinto their expanded position. The shaft 9 revolving continuously willcause the expander-rollers to expand the body portion of the shell untilit reaches the surface let of the jaws 11, while the size of the neckportion remains the same. This extra movement to enable the expander tomove the wed ge-shaped portions into their expanded positions will notaffect the position of the jaws 1 1 materially, inasmuch as thetoggle-links 21, operating the same, are approximately on the dead-center, and the movement needed to move the said expander-rollersinto their expanded position being comparatively slight its effect willnot be felt by the jaws 11, as whatever movement there might be would betaken up by the said toggles 21. \Vhen the treadle 18 is released, thespring 22 moves it up again automatically, and the slider 17, togetherwith the members movingin unison with the same, returns it to itsuppermost position, the cushion 2-1 preventing any undue jar of themachine. Simultaneously with this the expander 8 is withdrawn, thespring 10 forcing the wedge-shaped portions down into their contractedposition. The return movement of the treadle retracting the expander 8and mo ving the jaws 11 away from the work will permit the finishedblank to be removed. The

\V hat I claim is 1. In a machine of the character set forth, thecombination with a stationary work-holding device, a circumferentialflange on the same for receiving the blank, a rotatable chuck, aplurality of expander-rollers carried by the said chuck extending beyondthe circumferential flange of the work-holding device, means for movingsaid rollers into their expanded position,a plurality of jaws adapted toclasp the blank, a surface 13 on said jaws, adapted to come in contactwith the blank, of a diameter substantially equal to the diameter of theblank when the jaws are closed, c0- extensive with the circumferentialflange, another surface let on said jaws of a diameter somewhat greaterthan that of the surface l?) and equal, when the jaws are closed, to thediameter of the size of the blank when expanded, and coextensive withthe expanderrolls, a third surface 15 on said jaws of a smaller diameterand adapted to prevent the blank from lateral displacement on theworkholding device when the jaws are closed.

2. In a machine of the character set forth, the combination with astationary work-holding device, a circumferential flange on the same forreceiving the blank, a rotatable chuck, a plurality of expanderrollerscarried by the said chuck extending beyond the circumferential flange ofthe work-holding device, a plurality of jaws adapted to clasp the blank,a surface 13 on said jaws adapted to come in contact with the blank, ofa diame ter substantially equal to the diameter of the blank when thejaws are closed, coextensive with the circumferential flange, anothersurface 14: on said jaws of a diameter somewhat greater than that of thesurface 13 and equal when the jaws are closed, to the diameter of thesize of the blank when expanded, and coextensive with theexpander-rolls, a third surface 15 on said jaws of a smaller diameterand adapted to preventthe blank from lateral displacement on thework-holding device when the jaws are closed and means for closing thejaws first and then moving the expander-rollers into their expandedposition.

3. In a machine of the character set forth, the combination with astationary work-holding device, a circumferential flange on the same forreceiving the blank, a rotatable chuck, a plurality of expander-rollerscarried by the said'chuck extending beyond the circumferential flange ofthe work-holding device, a plurality of jaws adapted to clasp the blank,a surface 13 on said jaws adapted to come in contact with the blank, ofa diameter substantially equal to the diameter of the blank when thejaws are closed, coextensive with the circumferential flange, anothersurface 1a on said jaws of a diameter somewhat greater than that of thesurface 13 and equal when the jaws are closed, to the diameter ofdevelopment of the blank is indicated in Fig. 5. l the size of the blankwhen expanded, and coextensive with the expander-rolls, a third surface15 on said jaws of a smaller diameter and adapted to prevent the blankfrom'lateral displacement on the work-holding device when the jaws areclosed, and means for closing the jaws first and then moving the expander-rollers into their expanded position by an uninterruptedmovement.

4. In a machine of the character set forth, the combination with astationary work-holding device, of a rotatable chuck, a plurality ofexpander-rolls in said chuck, a plurality of clasping-jaws, a rotatableshaft, an expander for the expander-rolls carried by the said shaft andadapted to impart the motion of the shaft to the chuck, means for movingthe jaws into their closed position and then causing the expander tomove the expander-rollers into their expanded position.

5. In a machine of the character set forth, the combination with astationary work-holding device. of a rotatable chuck, a plurality ofexpander-rolls in said chuck, a plurality of clasping-jaws, a rotatableshaft, an expander for the expander-rolls carried by the said shaft andadapted to impart the motion of the shaft to the chuck, a collar fast onthe shaft, a sleeve loose on the shaft, means for moving the jaws intotheir closed position and simultaneously therewith sliding the sleeve upto the fast collar, the continued motion causing the sleeve to engagethe collar to move the shaft laterally so as to cause the expander tomove the expander-rollers into their expanded position.

Signed at Brooklyn, New York, this 16th day of January, 1904.

JOHN J. RIGBY.

Witnesses:

OTTO J. BRYCE, CHAS. J. ELLSWORTI-I.

